Naslov
Tidal flat, lagoonal and shallow marine carbonates in the Upper Jurassic and Cretaceous of Istria (Croatia)

Autori
Tišljar, Josip

Izvornik
Acta geologica (0448-0155) 9 (1978), 5; 159-194

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
carbonate platform ; tidal flat carbonates ; lagoonal carbonates ; Upper Jurassic ; Cretaceous ; Istria ; Croatia

Sažetak
The Upper Jurassic and Cretaceous sediments of the western and southern Istria are presented by the shallow-marine autochtonous limestones, early diagenetic and late diagenetic dolomites. Thin interleyers of marls/clays, intraformational breccias and chert nodules and lenses occur sporadically in them. An abundance of LLH-stromatolites, oncolites, peletal and lime mud-bearing limestones with dessication cracks, fenestral fabric, peritidal cycles and short-lasting emersions in the Upper Tithonian and Lower Cretaceous point aut a sedimentation in the inner part of a carbonate platform in supratidal-intertidal - tidal flat - subtidal - lagoon and innerplatform shallows environments. Rudist biostromes, coquinas and coquinites in alternation with lime mud-bearing limestones dominate in the Upper Cretaceous. They were formed by sedimentation in shallow part - subtidal and shallows of the carbonate platform.

Izvorni jezik
Engleski

Znanstvena područja
Geologija

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